The DYT and DYTB series electro-hydraulic push rods are suitable for reciprocating linear (or reciprocating rotational) motion, and can be used in applications for lifting, lowering, or clamping workpieces, as well as in remote and high-altitude hazardous areas. They can also be networked with computers for centralized (programmed) control. They are now widely used in industries such as metallurgy, mining, coal, electricity, machinery, grain, cement, chemicals, water conservancy, and transportation, and are an indispensable general power source.
Principles and Functions:
1. Working Principle: The electro-hydraulic actuator is powered by an electric motor, which, through forward (or reverse) rotation, drives the hydraulic oil to be output as pressure oil via a bidirectional gear pump. The oil then flows through an integrated oil circuit block to the working cylinder, thereby achieving reciprocating motion of the piston rod.
2. Overload Automatic Protection Function: During the operation of the electro-hydraulic push rod, if the external force on the piston rod exceeds the rated output force or the piston reaches the end position, the motor continues to rotate. At this point, the oil pressure in the oil circuit increases to the set pressure, and the overflow valve rapidly and accurately discharges, achieving overload automatic protection. Although the motor is rotating, it will never be damaged.
3. Self-locking Function: The hydraulic push rod's oil circuit module is designed with a pressure self-locking mechanism. Once the motor stops rotating, the piston rod immediately remains at a certain position, and the pressure oil remains in a pressure-holding state.
4. Speed can be infinitely adjusted within the designated speed range according to customer requirements.
5. Can be adjusted continuously within the rated output force range, according to customer requirements, for both pushing and pulling force.
6. The travel range can be infinitely adjusted within the designated travel range as per customer requirements.
Comparison with Similar Products
Electro-hydraulic push rods offer the following advantages compared to electric push rods, electric actuators, hydraulic cylinders, and pneumatic cylinders:
1. Features reliable overload automatic protection, allowing the motor to continue operating normally even under overload or at the end of its stroke, without damaging other components. Electric actuators and electric actuators cannot compare.
2. Electro-hydraulic push rods can be started under load, whereas it is quite difficult for electric push rods and electric actuators.
3. On the same electro-hydraulic push rod, the thrust and pull force can be infinitely adjusted within its rated range, thereby offering a wide driving force range, which is something that electric push rods and cylinders cannot achieve.
4. Under the same thrust and speed, the hydraulic push rod consumes half the electrical energy of the electric push rod and electric actuator.
5. The electro-hydraulic push rod utilizes full hydraulic transmission, offering sensitive operation, smooth movement, and effectively mitigates external impact forces. It provides accurate stroke control, which is not achievable with cylinders, electric push rods, or electric actuators.
6. The electro-hydraulic push rod features an integrated, fully enclosed mechanical, electrical, and hydraulic structure. The working oil circuit circulates within a pressure-free, sealed steel cylinder, offering a compact design, oil-tightness, and ease of installation and maintenance. It resists dust and water in harsh environments, prevents internal corrosion, and boasts a longer service life compared to cylinders, electric push rods, and electric actuators.
7. Low investment required. Pneumatic cylinders need to be built with expensive air compressor stations, where air pipelines are prone to leakage, resulting in unstable air pressure and high noise levels; hydraulic cylinders require a hydraulic station, whereas electro-hydraulic actuators only need to be plugged into power to be operational.
8. Easy to maintain. In special cases, the electro-hydraulic push rod only requires replacement, whereas the hydraulic cylinder necessitates a gradual identification of the fault cause followed by meticulous repair, which can disrupt the normal operation of the entire work.
Comparison Chart: Electrohydraulic Push Rod vs. Electric Push Rod, Electric Actuator, Hydraulic Cylinder, and Cylinder
